Biology
Related Questions
The onset of menstruation in a human female is called:
- Menopause
- Menarche
- Ovulation
- Oogenesis
Match the items given in Column I with most appropriate ones in Column II and rewrite the correct matching pairs:
Column I Column II (a) Leydig Cells Lack of thyroxine in children (b) Stoma 12 pairs (c) Ova Testosterone (d) Cranial nerve Diffusion of respiratory gases (e) Cretinism Haploid cells 31 Pairs Diploid cells Shruti’s mother gave birth to two male babies. Both the babies had a strong resemblance to each other. The doctor said that they have been formed from a single ovum.

(a) What kind of twins are they?
(b) Why are they of the same gender?